BS EN ISO 4414:2010 pdf download
BS EN ISO 4414:2010 pdf download.Pneumatic fluid power —General rules and safety requirements for systems and their components.
5.2.7 Control or engergy supply
Whatever the type of control or energy supply used (eg.. electrical, pneumatic), the following actions or occurrences (whether unexpected or intentional) shall not create a hazard:
a) switching the supply on or off;
b) reducing the supply
c) cuttrng off the supply;
d) restoring the supply (unexpectedly or intentionally).
52.8 Positive isolation front energy sources
The system shall be designed to facilitate positive isolation from energy sources (see ISO 121002010, 63.5.4) In pneumatic systems, this can be done, for example, by
— isolating the supply with a suitable shut-off device. wti.ch should be lockable, and shall be accessible without causing a hazard, or Isolating and dissipating pressure from the system with a suitable shut.off devIces) having a pressure-release feature, which can need to be lockable.
— releasing or supporting mechanical loads when the system is depressiztzed:
— isolating the electrical supply (see IEC 60204-1:2009, 53). The system shoP facilitate dissipation of the fluid pressure
Precautions should be taken when the supply is reinstated after isolation or depressunzation,
5.2.9 LocatIon of compon.nts and controls
The system shaM be designed and constructed so that components and controls are located where they are
easily accessible for use, acustment and maintenance without causing hazard 5.2.10 Unexpected start-up
In order to prevent unexpected start-up, precautions shall be taken in accordance with ISO 14118.
5.2.11 Uncontrolled actuator movement
It rapid opening of the shut-off valve can produce uncontrolled movement of actuators, a soft-start/slow-start
vatve shall be incorporated.
5.2.12 Airborne hazardous substances
Systems shaM be so designed, constructed and/or equipped that airborne hazardous substances are minimized.
5.3 Additional requirements
5.3.1 Site conditions and operating environment
Site conditions and operating environment shall be defined. Annex B provides forms and checklists to facilitate the gathering and recording of this intormation, which may include
a) ambient temperature range of the installation;
b) ambient humidity range of the installation;
C) atmospheric pressure:
d) specificahon of pneumatic supply available, such as pressure, flow capability, pressure dew point. nominal filtration rating, and oil carry.over;
e) available utilities, e.g. electricity, water, waste:
1) electrical network details. e.g. voltage and its tolerance, frequency, available power (if limited);
g) protection for electrical circuits and devices;
Ii) sources of contamination;
i) sources of vibration:
j) possible severity of a fe. explosion or other hazard and availability of related emergency resources;
k) unusual environmental or geoaphical conditions. e.g. altitude, ultraviolet radiation;
I) requirements for safeguarding;
m) space required for access use and maintenance as well as the location and mounting of components and systems to ensure their stability and security in use;
n) legal and other environmental limiting factors (e.g. noise emission level);
o) other safely and special requiernents.
5.3.2 lnstallat(on, use and maintenance of components, pipIng and assemblIes
5.3.2.1 R.placement
Components, piping and assemblies should be installed so that they can be easily replaced witriout dismant other parts of the machine.
5.3.2.2 Lifting provisions
All components, assemblies or pipiog having a mass greater than 15 kg should have provision(s) for lifting (see ISO 12100:2010. 6.3.5.5),
5.3.3 Cleaning and painting
5.3.3.1 During external cleaning and painting of machinery, sensitive materials shall be protected from incompatible liquids.
5.3.3.2 During painting, areas that should riot be painted (e.g. piston rods, indicator lights) shall be covered and the coverings removed afterwards. Alter painting, all warnings and safety related markings shall be visible and legible.
5.3.4 Preparation for transportation
5.3.4.1 Identification of piping
Whenever it is necessary to dismantle pneumatic systems for transportation, the piping and correspondmg connections shall be dearly identified. The identification shall correspond to, and not conflict with, the data on any appropnate drawings.
5.3.4.2 Packaging
All parts of the pneumatic systeni shall be packaged for transportation in a manner that preserves their identification and protects them from damage, distortion, contamination and corrosion.
Exposed openings in pneumatic systems and components, in particular tubes and hoses, shall be protected during transportation either by being sealed or by being stored in an appropriately clean and closed container. Male ttweads shall be protected. Any protective device used shall be of the type that prevents reassembly until is removed.
